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    2.
    发明专利
    未知

    公开(公告)号：BR8303291A

    公开(公告)日：1984-02-07

    申请号：BR8303291

    申请日：1983-06-21

    Applicant: IBM

    Inventor： JOHNSON CARL FOSTER ,  WILLIAMS JAMES MONROE

    IPC: B41J5/00 ,  B41J5/28 ,  G06F3/02 ,  B41J29/38

    Abstract: A typewriter (10) is described which has an electronic keyboard (12) utilizing a timed delay to determine whether a depressed key is indicative of the desire to print or display repetitive letters represented by that key. The typewriter (10) is provided with a technique for automatically adjusting the length of the delay such that a slow typist with sluggish finger movement will automatically cause the extension of the delay time and thereby prevent unwanted repetitive characters while a fast, very rhythmic typist will not cause the automatic extension of the delay time. The automatic extension is accomplished by timing the period of time that keys are held depressed and when that time approaches but does not exceed the preset automatic delay time, the delay time is then extended a predetermined amount.

    AN ELECTRONIC TYPEWRITER
    8.
    发明专利
    AN ELECTRONIC TYPEWRITER 未知

    公开(公告)号：AU521804B2

    公开(公告)日：1982-04-29

    申请号：AU4597479

    申请日：1979-04-12

    Applicant: IBM

    Inventor： BOWLES DAVID JOHN ,  CLANCY DOUGLAS EUGENE ,  JOHNSON CARL FOSTER ,  NEAL DANNY MARVIN

    IPC: B41J29/18 ,  B41J21/17 ,  B41J25/04 ,  B41J29/36 ,  B41J29/42 ,  B41J19/50 ,  B41J19/58

    Abstract: On electronic typewriters which have the ability to record into a small working memory those characters, functions and escapements which are keyed at the keyboard, it is many times advantageous to be able to place the carrier and the print point over a character which has been previously typed without using repeated backspaces. Disclosed herein is a feature for an electronic typewriter which permits the operator to easily align the print point with a character on the page by positioning a reference mark on the card holder or print carrier in relation to a previously printed character and then through keyboard control cause the carriage to shift its position such that the print point is then exactly aligned with the character printed. The positioning of the carrier such that the reference mark is in relation to the desired print point is accomplished by a backspace operation and the repositioning or causing of the carrier to assume a position immediately over the subject character is accomplished by keyboard control through the electronics of the typewriter to cause the carrier to shift a predetermined distance.

    9.
    发明专利
    未知

    公开(公告)号：DE2920563A1

    公开(公告)日：1979-11-29

    申请号：DE2920563

    申请日：1979-05-21

    Applicant: IBM

    Inventor： BOWLES DAVID JOHN ,  CLANCY DOUGLAS EUGENE ,  JOHNSON CARL FOSTER ,  NEAL DANNY MARVIN

    IPC: B41J29/18 ,  B41J21/17 ,  B41J25/04 ,  B41J29/36 ,  B41J29/42 ,  B41J19/62 ,  B41J19/58

    Abstract: On electronic typewriters which have the ability to record into a small working memory those characters, functions and escapements which are keyed at the keyboard, it is many times advantageous to be able to place the carrier and the print point over a character which has been previously typed without using repeated backspaces. Disclosed herein is a feature for an electronic typewriter which permits the operator to easily align the print point with a character on the page by positioning a reference mark on the card holder or print carrier in relation to a previously printed character and then through keyboard control cause the carriage to shift its position such that the print point is then exactly aligned with the character printed. The positioning of the carrier such that the reference mark is in relation to the desired print point is accomplished by a backspace operation and the repositioning or causing of the carrier to assume a position immediately over the subject character is accomplished by keyboard control through the electronics of the typewriter to cause the carrier to shift a predetermined distance.

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